I took one with the US Power and Sail Squadron many years ago. We use members diesels to get a lot of hands on with different sizes and configurations. Pretty good 6 session course. Very practicle. Not enough to become a certified mechanic, but enough to resolve most issues short of a rebuild.
Have you considered calling the Yanmar dealers in San Diego and inquiring about owners or captain's classes in the engine you have aboard? They may offer a version at a reasonable price. Other than that, you might check at the vocational-tech schools to see if they offer a dieselengine class.
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Capt. Douglas Abbott
USCG/MCA IV/M.I./C.I. 500-ton Oceans
Boat: Sold the most recent one but there's always another boat!
Posts: 45
Orange Coast College in Costa Mesa/Newport Beach offers several diesel classes; an intro class, one for maintenance & troubleshooting, plus a one day class put on at Boatswain's Locker, the Southern California Yanmar distributor. You'll find these listed under Seamanship Courses/Marine Maintenance on their website at www.occsailing.com
Mack Boring New Jersey offers classes- they are main us Yanmar agent- I took class it is good- also have three day pull motor apart and put together to run class.